144556451 has 4 divisors (see below), whose sum is σ = 155676192. Its totient is φ = 133436712.

The previous prime is 144556439. The next prime is 144556459. The reversal of 144556451 is 154655441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154655441 = 197 ⋅785053.

It is a cyclic number.

It is not a de Polignac number, because 144556451 - 2¹⁰ = 144555427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144556459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5559851 + ... + 5559876.

It is an arithmetic number, because the mean of its divisors is an integer number (38919048).

Almost surely, 2^144556451 is an apocalyptic number.

144556451 is a deficient number, since it is larger than the sum of its proper divisors (11119741).

144556451 is a wasteful number, since it uses less digits than its factorization.

144556451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11119740.

The product of its digits is 48000, while the sum is 35.

The square root of 144556451 is about 12023.1631029442. The cubic root of 144556451 is about 524.8225565108.

The spelling of 144556451 in words is "one hundred forty-four million, five hundred fifty-six thousand, four hundred fifty-one".